Machine for sharpening shears



(No Model.)

G. K. WILLIAMS.

MACHINE FOR SHARPENING SHEARS. N 308,046. Patented Nov. 11, 1884.

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MACHINE FOR SHARPENING SHE ARS.

SPECIFICATION forming part of Letters Patent No. 308,046, dated November11, 1884.

Application filed October 18, 1883. (No model.)

To ail whom it may concern.-

Be it known that I, CHAS. K. WILLIAMs, a citizen of the United States,residing at Grand Rapids, in the county of Kent and State of Michigan,have invented a new and useful Machine for Sharpening Shears, Scissors,and other Cutting-Instruments with like beveled edge, of which thefollowing is a specification.

This invention relates to machines for sharpening shears, scissors, andother cutting-instruments to the blades of which it is desired to give abevel; and it consists in the novel construction, combination, andarrangement of the several parts, as will be hereinafter more fullydescribed and claimed.

In the drawings, Figure 1 is a perspective view. Fig. 2 is a verticallongitudinal section of my machine. Fig. 3 is a detail perspective viewof my clamp.

The base or supporting-bed A is provided near one end with the uprighte, which is provided or formed at, or near its upper end with afile-guide, 6, made preferably in the eye or ring form shown mostclearly in Fig. 1. Near the opposite end of the base A, I form throughit avertical opening, over which I secure the tubular socket 0, madepreferably as shown, and provided with a set-screw, (7, turned through athreaded opening, and having its point capable of being turned into thestandard-opening and against the standard, whereby the latter may beheld at any desired point of vertical adjustment. This standard I) hasits lower end passed through the socket and base, and may be adjusted upor down, as desired, and held at the proper point by set-screw d.

On the upper end of the standard Isecure or form the long jaw a, havingits inner face made flat, so the flat face of the blade will restsolidly against it, and this arm has two or more rest-lugs, a, extendingoutwardfrom itslower edge, and adapted to rest close under and againstthe lower side of the blade.

The standard, close to the jaw a, has formed transversely through it anopening, a, for the passage of the shank or arm of the short jaw D. Thisjaw D is rested near its ends on the lugs a, and has a threaded shank orstem, (1, passed through opening a.

A nut, (1*, turns on the outer end of the shank d and against the longjaw, clamping said parts toward each other and firmly on the interposedblade, as shown in Fig. 2.

The short jawis preferably concaved slightly on its inner face,to fitthe back or rib of a shears blade. The file F has its point passed andmovable through the guide 6, and is preferably formed with an oil-hone,f, on one and an abiading-face, f, on its other side, and with asuitable handle, f, as shown. The point or end extended through the ringor guide 0 is preferably made of highly-polished steel, so that the filemay be reciprocated easily, as desired, in operation.

In operation the tile is passed rapidly to and fro over the blade to besharpened with a sliding motion from point to heel, thus producing auniformly sharp edge, at the same time keeping the bevel in perfectmanner. By adjusting the standard, up or down the angle of the bevel maybe varied at will.

It is manifest that equally good results would be had if the part 6 weremade adjustable instead of I), as shown and before described.

My invention is simple and efficient to the desired end, can be cheaplymade, and is not likely to get out of order.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s

1. The combination of base or support, an upright, e, formed with asuitable file-guide, and the standard I), provided with a' bladeelampingattachment, one of said parts 6 I) being adjustable vertically, wherebythe angle of operation may be varied, substantially as set forth.

2. The hereindescribed blade-sharpening machine, consisting of the bedor support, the upright provided with an eye or file guide, the standardprovided at its upper end with bladeclamping devices, and having itslower end extended through the base, and the clamp-screw binding againstsaid standard, whereby the same may be held at any desired point ofvertical adjustment, and the file, substantially as set forth.

3. The combination of the standard formed ICO with jaw a, having lugs aextended from its lower edge, and provided with a transverse opening,a", and the jaw D, provided with threaded arm (1, inserted throughopening a", and the clamping-nut turned on said threaded arm,substantially as set forth.

Witnesses: CHAS. K. WILLIAMS.

WM. H. BOUGHTON, W. S. DAVIS.

